Improvement in machines for making paper boxes



UNITED STATES JEHU I-IATFIELD, OF TROY, NEV YORK, ASSIGNOR TO PEROY daSAME PLACE.

PATENT OFFICE.

KING, OF

IMPROVEMENT IN MACHINES FOR MAKING PAPER BOXES.

Specification forming part of Letters Patent No. 34,229, dated January21, 1862.

To all whom t may concern:

Be it known that I, J EHU HATFIELD, of Troy, in the county of Rensselaerand State of New York, have invented a new and Improved Machine forManufacturing Angular or Polygonal Boxes of Paper-Board; and I do herebydeclare that the following is a full, clear, and exact description ofthe same, reference being had to the annexed drawings, making apart ofthis specification, in which Figure 1 is a side view of our invention;Fig. 2', a transverse vertical section of the same, taken in the line :r0c, Fig. 1; Fig. 3, a transverse section of a portion of the same, takenin the line y y, Fig. 1; Figs. 4t, 5, and 6, views of a strip of paper,showing the dierent stages in the process of bending or formingthe samein manufacturing a box.

Similar letters of reference indicate corresponding parts in the severalfigures.

The object of this invention is to obtain a machine by which strips ofpaper-board may be very expeditiously bent and pressed into angular formfor the manufacture of angular or polygonal paper boxes.

The invention consists in the employment or use of a stationary angularbed in connection with a grooved pressure-roller, the latter beingarranged in a peculiar way and connected witha graduatingspring,Substantially as hereinafter described, whereby the pressure of theroller may be varied according to the thickness of the paper and themanipula- `tion of the machine rendered extremely easy.

To enable those skilled in the art to fully understand and construct myinvention, I will proceed to describe it.

Arepresents a bed-piece or bed, which supports a framing B, the latterconsisting of a wooden bar d and legs b. In the upper surface of thefront part of the bar a there is fitted a metal bar C, which is ofsquare form in its transverse section. An angle of this bar C is placeduppermost in the bar a, as shown clearly in Figs. 2 and 3. The back partof the upper surface of the bar d is inclined, as shown at b in Fig. 1,and on the bar a there is placed a yoke D, which is formed of twouprights bx hx, connected by a cross-piece c at their upper ends. Theup= rights bx hx are fitted in grooves d, one at each side of the bar d,and have a pin e passing through their lower ends.

E is a spring the back end of which is secured to a projection funderneath the bed a. This spring may be of wood or metal, and it passesthrough the lower part of the yoke D and bears upon the pin c.

F is a bar the back end of which has two pendants g g attached, betweenwhich a roller h is placed. This roller bears on the inclined surface bof the bar d. The bar F1 passes through the upper part of the yoke D,and a friction-roller t' in the yoke D bears upon F. At the opposite orfront end of bar F there are attached two pendants jj, between whichthere is placed a metal roller G, having a grooved or V-shapedperiphery, as shown clearly in Fig. 2, said groove correspondinginversely in form to the bar O. On the front or disengaged end of thespring E there is a slide H, which bears against the under side of thebar a, as shown in Figs. 1 and 2.

From the above description it will be seen that the spring E pressesdown the roller G on the bar O, and by adjusting the slide H thestrength of spring E, and consequently the degree of pressure of theroller G, may be graduated as desired. The bar F is allowed to slidefreely back and forth, and consequently the roller G may be shoved backand forth on the bar C, the hand of the operator being applied to ahandle I on b'ar a.

The strip J of paperboard which is to form the side of the box is cut ofa proper length and width and notched at its lower edge at the points 7swhere it is to be bent. (See Fig. 6.) The operator grasps the strip andlays it transversely on the bar O and draws the roller G over itconsecutively at points coinciding with the notches 7c, thereby bendingthe strip J and avoiding the necessity of creasing or cutting the stripin order to bend it in polygonal form, asshown in Figs. 4 and 5. Theinclined surface b of the strip .I causes the pressure of the roller Gto gradually increase as it is drawn forward, and thereby counteract anyyielding upward movement of said roller toward the termination of itsforward stroke.

The whole device is extremely simple, and a sufiicient pressure may beobtained by the roller G to efeotually bend the strip J with taohed, inconnection with the stationary bar out requiring much power to operateit or or bed C, spring E, slide H, and bara, arranged move the bar F.substantially as and for the purpose set forth. Having thus described myinvention, what I J EHU HATFIELD.

claim as new, and desire t secure by Letters Ntnessesz Patent, is- Y A.J. PEROY, Y

The sliding bar F, with the roller G :L-v t FENNER KING.

